________ is a metalloid, and polonium, which is radioactive and quite rare, is a metal.
New cards
2
Fluorine
________ and chlorine are more reactive than bromine and iodine.
New cards
3
Coulombs law
________ tells us that the strength of the interaction between two electrical charges depends on the magnitudes of the charges and on the distance between them.
New cards
4
Solids
________ are usually brittle; some are hard, and some are soft.
New cards
5
pure silicon
Very ________ is an electrical insulator, but its conductivity can be dramatically increased with the addition of specific impurities called dopants.
New cards
6
oxides
Most nonmetal ________ are acidic, which means that those that dissolve in water form acids.
New cards
7
single atoms
They are all monatomic (that is, they consist of ________ rather than molecules)
New cards
8
Oxygen
________ is a colorless gas at room temperature; all of the other members of group 6A are solids.
New cards
9
Anions
________ are larger than their parent atoms.
New cards
10
Metals
________ tend to have low ionization energies and therefore tend to form cations relatively easily.
New cards
11
valence electrons
The ________ added to counterbalance the increasing nuclear charge screen one another ineffectively.
New cards
12
ionization energy
Increased radius decreases nucleus- electron attraction, lowering ________.
New cards
13
Chlorine
________ is the most industrially useful of the halogens.
New cards
14
Compounds
________ made up of a metal and a nonmetal tend to be ionic substances.
New cards
15
Hydrogen
________ is a nonmetal that occurs as a colorless diatomic gas, H2 (g), under most conditions.
New cards
16
molecular substances
Most nonmetal oxides are ________ that form acidic solutions.
New cards
17
atomic weight
When elements are grouped by ________, identical chemical and physical properties occur periodically.
New cards
18
sharp increase
The ________ in ionization energy that occurs when an inner- shell electron is removed.
New cards
19
ionic halides
The halogens react directly with most metals to form ________.
New cards
20
nuclear charge increases
In any isoelectronic series, we can list the members in order of increasing atomic number; therefore, the ________ as we move through the series.
New cards
21
Neil Bartlett
In 1962, ________ (1932- 2008) at the University of British Columbia reasoned that the ionization energy of Xe might be low enough to allow it to form compounds.
New cards
22
Ionic compounds
________ can be used to calculate ionic radii from interatomic distances, much like molecules can.
New cards
23
isoelectronic series
A(n) ________ is a group of ions all containing the same number of electrons.
New cards
24
Metals
________ are shiny, malleable, and ductile.
New cards
25
Solids
________ are malleable and ductile.
New cards
26
Oxygen
________ has a great tendency to attract electrons from other elements (to oxidize them)
Studied by 4 people
Note 
Flashcard (43)